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GE Appliances Dishwasher Error Code C7

⚠ Medium Severity 🔧🔧 Moderate DIY

OWI sensor failure — optical water indicator fault

The optical sensor that detects water clarity (how dirty the wash water is) has failed. The dishwasher may run shorter cycles than needed.

💰 DIY cost: $30–$80 👨‍🔧 Pro cost: $150–$300 Save $120+ by doing it yourself

What Does Error Code C7 Mean on a GE Appliances Dishwasher?

OWI sensor failure — optical water indicator fault.

The optical sensor that detects water clarity (how dirty the wash water is) has failed. The dishwasher may run shorter cycles than needed.

What Causes Error Code C7?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    OWI sensor lens dirty or coated 60% of cases
  2. 2
    OWI sensor failure 30% of cases
  3. 3
    Control board OWI input failure 10% of cases

How to Fix GE Appliances Dishwasher Error Code C7

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Clean the OWI sensor

    Located on the sump assembly. Clean the lens with a soft cloth.

  2. 2

    Test and replace OWI sensor

    If cleaning doesn't resolve.

    🔩 GE OWI sensor ($30–$80)

How to Reset Error Code C7

After cleaning or replacing, run a normal wash cycle.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

When to Call a Professional

C7 rarely causes complete failure — dishwasher still washes, just uses default cycle length.

Average professional repair cost for this issue: $150–$300

Related Error Codes

C5
Drain failure — dishwasher not draining
⚠ High Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your GE Appliances Dishwasher:

🔩
Search PartSelect
GE Appliances Dishwasher repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

Frequently Asked Questions

What does error code C7 mean on a GE Appliances Dishwasher? +
OWI sensor failure — optical water indicator fault
How do I fix error code C7 on my GE Appliances Dishwasher? +
Start by Located on the sump assembly. Clean the lens with a soft cloth.. If that doesn't resolve it, work through each step in the fix guide above.
How do I clear or reset error code C7? +
After cleaning or replacing, run a normal wash cycle.
Is error code C7 serious? +
Medium severity. The appliance may still operate but the issue should be resolved to prevent further damage.
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